Portable environmental sound machine



FIG. 1 is a perspective view of a portable environmental sound machine showing our new design, in an open position;

FIG. 2 is a top plan view thereof, in a closed position;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view of the portable sound machine in an open position;

FIG. 8 is a left side elevational view thereof;

FIG. 9 is a right side elevational view thereof;

FIG. 10 is a front elevational view thereof; and

FIG. 11 is a rear elevational view thereof. 

The ornamental design for a portable environmental sound machine, as shown and described. 